Title:
AMINE-FUNCTIONAL COPOLYMER AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2003/102036
Kind Code:
A1
Abstract:
An amine-functional copolymer improved in color and odor; and an efficient method by which a vinyl alcohol/N-vinylcarboxamide copolymer is efficiently hydrolyzed into an amine-functional copolymer in a powder form. The amine-functional copolymer is one whose 10 wt.% aqueous solution has a Gardener index as measured in accordance with ASTM D1544 of 3 or lower. The amine-functional copolymer can be obtained by hydrolyzing an N-vinylcarboxamide copolymer in the presence of an acid or base catalyst in an aqueous medium containing a salt dissolved therein.
Inventors:
ITOU YASUHIRO (JP)
AOYAMA MASATO (JP)
SAWA KOUHEI (JP)
AOYAMA MASATO (JP)
SAWA KOUHEI (JP)
Application Number:
PCT/JP2003/006269
Publication Date:
December 11, 2003
Filing Date:
May 20, 2003
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
ITOU YASUHIRO (JP)
AOYAMA MASATO (JP)
SAWA KOUHEI (JP)
ITOU YASUHIRO (JP)
AOYAMA MASATO (JP)
SAWA KOUHEI (JP)
International Classes:
C09D129/04; C08F8/12; C08F216/06; C08F226/02; C09D139/02; C09D201/02; D21H19/20; D21H27/00; (IPC1-7): C08F8/12; C08F226/02
Domestic Patent References:
| WO2002008302A1 | 2002-01-31 |
Foreign References:
| JP2002145926A | 2002-05-22 | |||
| JPS61118406A | 1986-06-05 |
Other References:
See also references of EP 1510531A4
Attorney, Agent or Firm:
Senmyo, Kenji (38 Kanda-Higashimatsushitach, Chiyoda-ku Tokyo, JP)
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